josh_marchant,
Nope that is all I need to provide you with a Basic document.
Now, this is a very basic document and a lot more can be changed to make the device work or provide support for other features, but this should get you in the ball park of getting the phone up and working on your system.
Basically you are just creating an extension and then providing credentials to log into it, but there are other locations you can go to in order to make this work better for you. Such as the IP Configurations section and creating a custom Configuration for the SNOM phone; which is what a technician would do.
Thanks,
TE